Plate-glass clamp.



L. BARTBLSTONE.

PLATE GLASS CLAMP.

APPLIUATIGN FILED GOTA, 1906.

927,092. Patented July 6, 1909.

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UNITED STATES PATENT OFFICE.

LOUIS BARTELSTONE, OF NEW YORK, N. Y.

PLATE-GLASS CLAMI?.

To all whom it may concern:

Be it known that I, Louis BirnrnLsroNn, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Plate-Glass Olamps, of which the following is a full, clear, and exact description, such as will enable others skilled. in the art to which it appertains to make and use the same.

This invention relates broadly to constructions in which a plurality of plates, as of glass, are yieldably held together, but since certain eminent advantages prominently appear when it is resorted to for the purpose of bonding together a pair of meeting alined plates and a transverse plate, it will be conducive to clearness to disclose it through its embodiment in such connection.

One object of this invention is to provide a plurality of transparent plates which are so united that the whole will not only be neat and attractive in appearance, but will also be as free as possible from obstructions to the view through the plates.

Another object is to provide a device ofthe described nature which will be simple in construction, composed of but few parts, and be not only of an inexpensive nature, but capable of being readily applied without unduly cutting away portions of the glass plates.

Another object is to provide a clamping means which may be adjusted so as to yieldably hold together the glass plates and permit the same to have sufficient motion to accommodate themselves to expansion or contraction, warping, vibration and the like, without causing excessive strains to be set up in the fragile glass.

Other objects and advantages will be in pprt obvious and in part pointed out hereina' ter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which. will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

Like characters of reference denote corresponding parts throughout all the views, of whieh Figure 1 is a sectional perspective, showing one embodiment of this invention in its application to three plates of glass. Fig. 2 is a horizontal section taken medially through Fig. 1 and showing the arrangement and re- Specieation of Letters Patent.

Application filed October 4, 1906.

Patented. July 6, 1909.

Serial No. 337,361.

lationship of the various details and features comprised by the said embodiment.

In the drawings, X and Y represent the front plates of a case, such plates lying in the same plane and having their edges slightly s aced apart. Between the edges of said p ates is interposed the edge of a transverse plate Z. While this is the preferable disposition of the glass plates, it will be understood that certain obvious variations may be had, such as a variation in the angular relationship of the plates, and that in some cases the transverse plate will not necessarily extend beyond the edges of the outer plates. The shown construction is, however, that which will ordinarily be preferred, and is regarded as representing substantial improvements over the various obvious adaptations of the same.

Arranged exteriorly of the plates X and Y and preferably straddling the jointure therebetween, is a pressure bar A. This bar will preferably be provided in its inner surface with grooves or recesses A2, within which is located a suitable cement or adhesive A4, whose function is to increase the friction and adherence of such bar to the glass plates which it abuts. In case it is desired to have the transverse plate Z lie between the outer plates, it will be preferable to cause it to slightly protrude beyond the outer surface of such plates X and Y in the manner shown in Fig. 1. In this case the bar A will generally be provided with a recess A designed to interiit with the edge of the transverse plate, thus forming a sufficient interlocking of the various parts and insuring a permanence of their relative positions.

While the bar A may be otherwise clamped against or caused to abut the plates X and Y,

Vthe disclosed means for this purpose will in general be found to be of the greatest practical utility and. simplicity. This means comprises a bifurcated or two-legged link O which straddles the transverse plate Z and has each end provided with a suitable means for regulating the tension of suoli link. A simple form of this link` results from forming it of stout though resilient wire having screwthreaded ends O2 upon which are arranged thumb-nuts F. The bar A will be provided with a bridge A5 adapted to rest within the crotch of the link, and that the apex O3 of such link may not be unduly exposed and give to the structure an unfinished appearance, I prefer to provide a comparatively y shallow recess Aawithin which the apex ofthe link is countersunk.

lt will ordinarily be preferable to file away small portions of the abutting edges ofthe plates in the manner shown, in order that the legs of the link may be as straight as possible, but this is not necessarily essential since the link may be made ofV flat strips which may pass directly between the meeting edges of the plates.

In order that the clamping action may be made as eflicient as possible, and in order that the strains may be properly' distributed, l provide interior angle-piecesV B B, having each an elongated shank resting against the transverse plate Z, a suitable foot B2 resting against the corresponding outer plates, and an intermediate connecting portion B which is intended and adapted to be abutted by the adjustable nut F. Such connecting portion will preferably be apertured for the passage of the leg C of the link.

. pieces may be secured against the transverse plate Z by means of a double-headed bolt which comprises a memberl having a threaded shank E and having under the head thereof a washerE and a headed member E2 which l provides a shank having a screwthreaded socket.y The portions intermediate the heads pass through the elongated slots of the angle-pieces and an aperture in the transverse plate, and are so proportioned and arranged as to freely permit of the aforesaid transverse adjustment.

The application of the h'ereindisclosed clamping means will be readily understood. The plates will be first placed in the position shown by the drawing, and the bar and link tioned by the edges of the outer plates.

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connected therewith will be arranged with the legs of the link passing between the edges of the plates in the manner shown. The angle-pieces having been positioned in the angles or spaces between the transverse and front plates, the adjustable nuts F will be tightened, thereby causing all of the parts to assume a state in which the three plates are yieldably yet 'firmly clamped against undue movement. Plates Y and Z are clamped between the ends of the pressure barA and the opposite shoes of the angle-pieces. The transverse plate Z is clamped between the shanks of the angle-pieces and is also posi- It will be noted that through the instrumental ity of the pliable link, the pressures are properly and uniformly distributed' and that undue localization of strains is obviated.

It will be noted that inasmuch as the link may be composed of ductile material, it will possess a considerable degree of pliability, permitting it to conform to various irregularities in setting, and also permitting the plates to settle or vibrate to an appreciable extent without bringing excessive strains upon the same.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. lt is also to be understood that the language used in the following claims is intended to cover all of the generic and specilic features of the invention herein described' and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what l claim as new and desire to secure by Letters Patent is:

1. A device of the class described comprising in combination a pair of edgewise disposed coplanar plates, a plate transversely extending from the cinture of said plates, a bar straddling said jointure exteriorly of said parallel plates, and ay link extending from said bar through said jointure and arranged to yieldably clamp said three plates together.

2.*A device of the class describedcomprising in combination a pair of eoplanar plates, a transverse plate having a portion interposed between the adjacent edges of said eoplanar plates, three clamping pieces each in end abutment with two of said plates, and a link connected to each of said pieces arranged to draw said pieces together to wedge one or more of said pieces between two of said plates and thereby yieldably clamp and' hold all of said plates together.

3. A device of the class described comprising in combination aA pair of plates arranged with their edges adjacent one another, a pressure bar exteriorly abutting each of said plates, clamping pieces interiorly wedged between said plates, and a tension member connected to said pressure bar having a plurality of legs, each affixed to one of said pieces, retaining said parts in said relation.

4. A device of the class described coinprising in combination a member adapted to be held with each end in contact with the outer side of a corresponding one of a plurality of plates located in a given plane, means adapted to be adjustably clamped and wedged to a plate arranged at an angle to said plane on the inner side thereof, and a single connecting piece having a plurality of legs extending between the said member and means and adapted to be adjusted to wedge the plates together.

5. A device of the class described comprising in combination two plates arranged llO edgewise, a transversely extending plate 13o Cfr having a margin interposed between the same, a piece in contact with the outer surfaces of the first named plates and extending across the outer edge oi the transverse plate, a link extending between the edges of the plates and secured to an intermediate part of the outer piece, a plurality of angle-pieces secured to the transverse plate and in contact with a corresponding one of the iirst named plates, and an adjustable connection between the said .link and angle-pieces.

6. A device of the nature disclosed comprising, in combination, a pair of outer plates arranged edgewise, an intermediate plate arranged in the inner cngle between said outer plates and having its edge protruding beyond the outer faces ol said outer plates, an outer clamping piece straddling the jointure between said plates and having its opposite ends contacting with the adjacent outer plates, the unexposed intermediate face ot said clamping piece being recessed intermediate its ends for the reception of the protruding edge ol said intermediate plate, and adjustable means secured to said intermediate plate and to said outer clamping piece for cooperating with said outer clamping piece to retain said three plates together.

7. A structure ofthe nature disclosed comprising, in combination, a pair of outer plates arranged with their edges adjacent one another, a third plate arranged at an angle to said outer plates with its edge adjacent the jointure thereof, a bar straddlmg the jointure of said outer plates eXteriorly thereof, independent right and left hand clamping pieces arranged in the two angles deiined by said three plates respectively, said clamping pieces being secured to said third plate, and connecting means for bonding the three clamping pieces together.

8. A glass liront structure comprising, in combination, a pair of outer plates arranged with their edges adjacent the jointure between said outer plates, a pair of L-shaped clamping pieces each onl an opposite side of said third plate and secured thereto, the foot of each of said L-shaped clamping pieces being arranged to press against a corresponding inner face of said outer plates, an exterior clamping piece straddling the jointure between said outer plates, and adjustable means for connecting the three clamping pieces together.

In testimony whereof I a'HiX my signature, in the presence of two witnesses.

LOUIS BARTELSTONE.

Witnesses:

ARTHUR G. PREVIN, R. S. BLAIR. 

